Technical data

Node Manager Capabilities
Configuring and Managing WebLogic Server 3-7
machine. The Node Manager forwards the request to the target Managed Server for
execution. If the Managed Server fails to respond to a shutdown request from the Node
Manager, the Node Manager process itself performs the shutdown.
Shutdown Failed Managed Servers
Node Manager periodically checks the self-reported heath status of Managed Servers
that it has started. (For information about how a Managed Server monitors its health,
see “Server Self-Health Monitoring” on page 9-2.) By default, Node Manager issues a
health query to a Managed Server every 180 seconds.
Node Manager will automatically kill a Managed Server that reports its health state as
“failed”, if the Managed Server’s
Auto Kill If Failed attribute is true. By default,
the
Auto Kill If Failed attribute is false. If you want Node Manager to restart a
Managed Server that is hung, set
Auto Kill If Failed to true.
If a Managed Server does not respond to three consecutive health queries in a row,
Node Manager considers the Managed Server to be “failed”, and shuts it down, if
Auto
Kill If Failed
is set.
For instructions on controlling the frequency with which Node Manager checks the
health state of a Managed Server, see “Configure Monitoring, Shutdown and Restart
for Managed Servers” on page 4-6.
Restart of Crashed and Failed Managed Servers
By default, Node Manager automatically restarts Managed Server that have crashed,
and Managed Servers that it killed because their health state was “failed”.
By default, Node Manager will restart a Managed Server no more than 2 times within
a one hour period. You can configure how many times Node Manager will restart a
Managed Servers it controls, and the period of time over which it will do the restarts.
For instructions, see “Configure Monitoring, Shutdown and Restart for Managed
Servers” on page 4-6.
Note: If you stop a Node Manager process that is currently monitoring Managed
Servers, do not shut down those Managed Servers while the Node Manager
process is shut down. Node Manager will be unaware of shutdowns performed